Road Repair Projects Slated To Begin Near Mount Tamalpais

MARIN COUNTY, CA — Marin County is taking advantage of the traffic lull to conduct two projects on county-maintained roads while there are fewer cars on the road due to the ongoing shelter-in-place order. Both projects will take place near Mount Tamalpais.

The first project is a road striping project that is slated to start April 30 at a rural intersection above Mill Valley near Muir Woods National Monument. The second project is a roadside culvert rehabilitation that is expected to begin sometime in May on Frank Valley Road near Muir Beach.

The striping project will take place at the junction of Panoramic Highway, Sequoia Valley Road and Muir Woods Road, a spot known locally as Four Corners. A contracted company is slated to grind off existing striping and put temporary lane markers in place to guide traffic, according to the county.

The intersection will be slurry sealed to make the pavement dark black. The temporary lane markers will remain in place while the slurry seal dries, according to the county. Final striping is slated to begin May 9.

On Frank Valley Road, about a mile northeast of Muir Beach, the roadside culvert near Santos Meadow has been failing for many years and resulted in single-lane traffic flow for almost a decade. The county's Department of Public Works secured a federal grant and had scheduled the repair for 2021, but rapid degradation of the culvert has made the project a more urgent priority, according to the county.

Details of the project are still being discussed with state and federal agencies. Once work begins, only essential transportation will be allowed on Frank Valley Road for about a week.